We saw in the JDO Tutorial the overall process for adding
persistence to a simple application. In that tutorial we persisted the objects to an
RDBMS. Here we show the differences when persisting instead to the
db4o object datastore.

As you can see
changing between an RDBMS and db4o is trivial
. The only thing you
change is the URL for persistence! and omit the ORM information.

If you have any questions about this tutorial and how to develop applications for use
with
DataNucleus
please read the online documentation since answers are to be
found there. If you don't find what you're looking for go to our
Forums
.